const Base64 = {
  //加密
   encode(str) {
       return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g,
           function toSolidBytes(match, p1) {
               return String.fromCharCode('0x' + p1);
           }));
   },
 //解密
   decode(str) {
       return decodeURIComponent(atob(str).split('').map(function (c) {
           return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
       }).join(''));
   }
}
export default Base64;